An Experimental Study on Bubble Collapsing Effect of Nanobubble Using Ultrasonic Wave

Area of Science:

• Physical Chemistry
• Materials Science
• Nanotechnology

Background:

• Nanobubbles exhibit unique properties like high internal pressure and Brownian motion.
• Research often focuses on nanobubble pressure maintenance during shrinkage.
• Bubble collapse generates high temperatures, a phenomenon explored in this study.

Purpose of the Study:

• To investigate the destruction of hydrogen nanobubbles using ultrasonic waves.
• To analyze the temperature changes resulting from nanobubble collapse.
• To explore the potential applications of controlled nanobubble destruction.

Main Methods:

• Production and long-term storage of hydrogen nanobubbles using a novel technique.
• Application of ultrasonic waves to induce nanobubble collapse in water.
• Measurement of water temperature rise correlated with nanobubble destruction.

Main Results:

• Ultrasonic wave application effectively destroyed hydrogen nanobubbles.
• A significant rise in water temperature was observed due to bubble collapse.
• The collapsing effect was most pronounced within the first minute of sonication.
• Ultrasonic wave wattage was identified as a key influencing factor.

Conclusions:

• Controlled destruction of hydrogen nanobubbles via ultrasonication is feasible.
• The temperature increase from bubble collapse can be measured and potentially controlled.
• This method holds promise for various scientific and industrial applications.